fix the registers of csky

Author: Dirreke

compiler/rustc_target/src/asm/csky.rs

@@ -52,6 +52,8 @@ def_regs! {
         r4: reg = ["r4","l0"],
         r5: reg = ["r5","l1"],
         r6: reg = ["r6","l2"],
+        r7: reg = ["r7", "l3"],
+        r8: reg = ["r8", "l4"],
         r9: reg = ["r9","l5"],// feature e2
         r10: reg = ["r10","l6"],// feature e2
         r11: reg = ["r11","l7"],// feature e2
@@ -64,9 +66,9 @@ def_regs! {
         r20: reg = ["r20","t4"],// feature high-register
         r21: reg = ["r21","t5"],// feature high-register
         r22: reg = ["r22","t6"],// feature high-register
-        r23: reg = ["r23","t7", "fp"],// feature high-register
-        r24: reg = ["r24","t8", "sop"],// feature high-register
-        r25: reg = ["r25","t9","tp", "bsp"],// feature high-register
+        r23: reg = ["r23","t7"],// feature high-register
+        r24: reg = ["r24","t8"],// feature high-register
+        r25: reg = ["r25","t9"],// feature high-register
         f0: freg = ["fr0","vr0"],
         f1: freg = ["fr1","vr1"],
         f2: freg = ["fr2","vr2"],
@@ -99,10 +101,6 @@ def_regs! {
         f29: freg = ["fr29","vr29"],
         f30: freg = ["fr30","vr30"],
         f31: freg = ["fr31","vr31"],
-        #error = ["r7", "l3"] =>
-            "the base pointer cannot be used as an operand for inline asm",
-        #error = ["r8","l4"] =>
-            "the frame pointer cannot be used as an operand for inline asm",
         #error = ["r14","sp"] =>
             "the stack pointer cannot be used as an operand for inline asm",
         #error = ["r15","lr"] =>